I was going to go with a 9 pin D type connector but then I wouldn't have enough pins to power LED's as well. The denser 15 pin version is easy enough to work with. I used 16/0.2 (0.5mm2) equipment wire for the connections. The longest runs within the amp are less than 4 inches.

I haven't made the umbilical cable yet, and interested myself what Peter used for this purpose.

The knob is from RS Components (not Radio Shack). On your side of the pond you have much more variety and accessibility to control knobs.

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"The human mind is so constituted that it colours with its own previous conceptions any new notion that presents itself for acceptance." - J. Wilhelm. (But I still think mine sounds better than yours.)

Personally, I prefer the old boards, because Zobel network messes up the ground plane in case you are not using it (and I never do)

As to the umbilical cable, you can basically use anything: CAT5 comes to mind, I'm still using Cardas 20ga, and some ready made, computers cables are available as well (and they are already terminated).

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“Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

Originally posted by Peter Daniel ... computers cables are available as well ...

Peter, how much current do you think computer cable/plugs can carry? Should 2 pins/wires be used for each voltage rail when used as umbilical for a 3875 or 3886 chip amp? I'm guessing that a single wire is right on the edge...
Cheers.

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"Everything should be made as simple as possible, but not simpler." - Einstein

In this case, Per Anders, i don't think that it matters i am going to use flatbars measuring 100*50*10 mm, one for each chip/side - copper leads the heat away twice as good as aluminium, if you take a look at Peter Daniels gainclone in the BrianGT gallery i suppose that he also used copper ca. 25*25*100 mm fore both chips, the coolingarea are much smaller there, but i'm sure that it works fine. (sorry if i'm wrong Peter D i was just guessing....)

I believe copper conducts better, but alu dissipates heat better. Either way any heatsink that thickness I would presume to be ok.

__________________
"The human mind is so constituted that it colours with its own previous conceptions any new notion that presents itself for acceptance." - J. Wilhelm. (But I still think mine sounds better than yours.)